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An electron is accelerated through 2,200 V from rest and then enters a region where there...

An electron is accelerated through 2,200 V from rest and then enters a region where there is a uniform 1.50 T magnetic field. What are the maximum and minimum magnitudes of the magnetic force acting on this electron?

A) maximum in N

B) minimum in N

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Answer #1

The electron is accelerated through 2200V and hence its kinetic energy is given by .

The speed of the electron is given by =>

=> =>

The speed of the electron is

The magnetic force acting on the electron is given by

The force is maximum when the angle between the velocity and magnetic field is 90o and the force is minimum when the angle between the velocity and magnetic field is 0o.

A) The maximum force is . Hence

The maximum force on the elctron is

B) The minimum force on the elctron is ZERO.

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